Although that is some awesome groovery he displays in that vid with Soul Sirkus (I recommend the album with Virgil on it if you wan to hear him play some nice "normal" Rock music), I would not call that simple. He is integrating some complicated rhythmic tricks in that 4/4 groove.

Maybe I over estimated the 'simple' part of that :) It is however refreshing for someone to think outside of the box when it comes to these things.